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An acoustic beam simulation makes use of ultrasonic beams that are used in a phased array (PA) ultrasonic, which is considered to be an advanced method of ultrasonic testing.This method is better at finding flaws in manufactured materials such as welds. The acoustic beam simulation mimics how the ultrasonic beam in a PA probe can be focused and...
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Description

This standard contains performance requirements for a coating system for steel substrates that consists of a zinc-rich moisture-cure polyurethane primer (complying with SSPC-Paint 40) and an aliphatic polyurea topcoat (complying with SSPC-Paint 39, Type 2). The coating system is generally suitable for exposures in SSPC Environmental Zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water, excluding immersion), 2B (frequently wet by salt water, excluding immersion), 3B (chemical exposure, neutral) and 3C (chemical exposure, alkaline). This standard is intended to be used by specifiers, coating manufacturers, and end-users who desire a coating system that combines performance requirements of a polyurethane primer containing zinc pigment for corrosion resistance and an aliphatic polyurea topcoat with resistance to loss of gloss and good color retention.